The bacterium Escherichia coli (E. Coli) takes about twenty minutes to divide. So after one hour, one E. Coli cell has turned into eight. After only six and a half hours, there will be over a million bacteria!

Clostridium botulinum: Found in jams and preserves that weren't prepared properly, this bad bug produces one of the deadliest toxins on Earth-it enters our nerve cells and paralyzes them. Marketed as Botox, it's injected into people's foreheads to make wrinkles disappear!

You can even tell where a person's family came from by looking at the type of bacterium he or she carries!

If you on't like bacteria, you're on the wrong planet.

If you don't like bacteria, you're on the wrong planet.

We inherit every one of our genes, but we leave the womb without a single microbe. As we pass through our mother's birth canal, we begin to attract entire colonies of bacteria. By the time a child can crawl, he has been blanketed by an enormous, unseen cloud of microorganisms--a hundred trillion or more. They are bacteria, mostly, but also viruses and fungi (including a variety of yeasts), and they come at us from all directions: other people, food, furniture, clothing, cars, buildings, trees, pets, even the air we breathe. They congregate in our digestive systems and our mouths, fill the space between our teeth, cover our skin, and line our throats. We are inhabited by as many as ten thousand bacterial species; those cells outnumber those which we consider our own by ten to one, and weigh, all told, about three pounds--the same as our brain. Together, they are referred to as our microbiome--and they play such a crucial role in our lives that scientists like [Martin J.] Blaser have begun to reconsider what it means to be human.